Cannon.



ING. PMENTE JULY 28, :1903l W. H, VWM@ @www APPLIOATION FILEDNOV.2411902.

EO MODEL.

tiranno idr-trent @Ernten Willi'ilfid H. VIVAN, OF GLOUCESTER,MASSAQHUSET'IS.

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SPEGIFGATON forming part of Letters Patent No. 234,7?9, dated July 28,1.993. Application filed November 24, 1902. Serial llo. 132.528. LNOmofdel.)

.To all. when@ it "may concern:

Be it known that I, `W1LLIAM il. VrvIAN, a citizen AOt the UnitedStates, residing at Gloucester, in the county of Esser. and State ofMassachusetts, have invented new and useful Improvements in Cannon, ofwhich the following is a specitioation.

This invention relates to improvements in cannon for war-ships or n. thesupporting carriage resting open a Stationen different angles., the ohwhen mounted upon a carriage for ieldpieces.

The invention consists in e cannon, a sleeve eccentricall y mountedthereon, an d a suitable support upon which said sleeve is rotatablyinounted. f 2

The invention agr-.in consists in a cannon, a sleeve eccentricallymounted thereon, and an annular ring in which'said sleeve isrotatablymounted.

The invention. finally consists in the combination and arrangement ofparts set forth in the following specification, and particularly pointedout in the claims thereof.

Referring to the drawings, Figure l is a side elevation of a cannonmounted in accordance with my invention. Fie'. 2 is a rear end elevationof the same, showing the base of the carriage resting in a horizontalplane. Fig. 3 is a rear elevation similar te Fig. 2, illustrating thebase oi' the carriage tilted at an angldwhile the cannon remains in thesaine position with relation to a vertical plane extending through thelongitudinal median line and through the sights as that shown in'Fiff.2. `Fig. #i is a longitudinal section, partly in elevation, taken online ai et of Fie. 2. Fig. 5 is a detail elevation of the front sightand a portion-of one ofthe eccentric flanges. ilig o is an enlargeddetail elevation of the rear sight and e portion of the rear eccentricflange. Fig. 7 is an enlarged detail section of a poi tion of the reareccentric fiange, annular rin?. and roller-bearings.

Like numerals refer to like parts throughout the several views of thedrawings.

ln the drawings, 8 is a cannon of ordinary construction. 9 is a sleevesurrounding said cannon, in which said cannon is arranged to slidelongitudinally.

10 10 ure ears fast to the can non 8 and hav ing recoil-cylinders 11 l1fast thereto. The pistons of the recoil-cylinders re fastened by 'therods 12,12 to the rear eccentric flange 13,

integral with the slect'e 9. The interior con struction of therecei`i-eylindors is not illus trated in the drawings; as it forms nopart of this invention and is well known to those skilled in the art..The rearlcccentric flange 13 and front eccentric iienge 1i are both in;tegral with the'sleeve 9 and eccentric to the bore of the cannon 8. Saidflanges are' rota- .taoly mounted in an annular ring 15, foi-ined in twoparts joined together by crc'iss-pieces'` 16 16. The cross-pieces 16 areprovided with trunnions 17, integral therewith and pivotally mountedupon the cheeks 18 of' the carriage 19. The carriage 19 is preferablyformed in two parts, the upper 'part '2O constitutinga table arrangedtorotate in a horizontalplane upon the base 21. In the said rear eccentricHarige 13 is 'provided a vertical slot 22 extending therethrough, andvupon the rear face of the'iiange 13 is fastened a plate 23, providedwith affslide 24,' constituting the rear sight. Said slide 24 isprovided with a sighthole 25 and with a thumb-screw 26,.by which it isheld in .tired relation to the plato 23, the slide 2i projecting intothe slot '22. The front eccentric flange 1 1 is provided with anaperture 27, and lin this aperture is located the stationary front sight28. A

ln order that the sleeve 9 and the flanges 1B and 11i may rotate within.the ring 15 with the lleast possible friction, roller-hearings 29 Iand30 are provided, the 'roller-bearings. 29

loeing located between the periphery of the eccentric cylindrical iange13 and the ring 15. End roller-bearings 30 are provided between one faceof the flange 13, adjacentto the bearing 29 are the periphery thereof,and a plate 3l, lfast to the ring l5 by screw-bolts32- The rollers ofheld in position laterally by heldto the ring l5 byscrewmeans ot a plateolts \see Fig. k4) between the forward eccentric ila-nge 14 and thering' l5, the rollers of said bearing being held in 'position by plates36 and 37, fast to the rin-g 15 by screw-bolts,

The operation of the cannon, mounted as hereinbefore described,is asfollows: The cannon is free to slide longitudinally in the sleeve 9 andis controlled by the recoil-cylinders 11 411 in the usual manner. Vhenthe vessel rolls, the base 21 may be moved from the position shown inFigl 2 to that shown in Fig. 3, and in this case the cannon 8, togetherwith the sleeve 9 andl the flanges 13 and 14 integral therewith,maintains the same position with relation to a vertical ing through themedian line of the bore of the cannon, so that the conditions and theposition `of fthe sight are always the same with relation to the cannonand with relation to said 'vertical plane, as illustrated in AFig 8, inwhich the slot 22 is shown to be vertical and lie" in the vertical planepassing through longitudinal median line of the bore of cannon, thesaine as in Fig. 2, in which the base 2l is horizontal. It

Will therefore be seen that as the support upon which the hase 21 restsassumes d iiii'erent angles, either when 'said support is a vessel ,orwhen it is the carriage of a field-piece, the cannon and the sie-:ey esurrounding said cannon will always maintain the same relation to avertical plane passing through the longitudinal median line oit' thebore of said cannon and that the sights `will also maintain the samerelative location in relation to said plane, and therefore that underall conditions the accuracy with which the cannon can be aimed in usingthe front and rear sights is not interfered with. y

It will be seen, that while l have illustrated the sleeve 9 as providedwith two eccentric flanges 13 and 14 for the sake olA convenience inconstruction and for saving metal said sleeve might be made as acylinder Without Roller-hearings are also providedplane passianges, theperiphery of said cylinder being; of the diameter of said flanges, andthe cannon eecentrically mounted in said sleeve `with relation to theperiphery thereof Without departing from the spirit of my invention.

Having thus described my invention, what l claim, and desire by LettersPatent to secure, is-

1. A cannon, a cylindrical sleeve eccentric; ally mounted thereon, and asuitable support upon which said sleeve is rotatably mounted.

2. 'A cannon, a cylindrical sleeve eccentrically mounted thereon,'and anannular ring in which said sleeve is rotatably mounted.

3. A cannon-a sleeve mounted thereon, cylindrical flanges upon saidsleeve eccentric to the bore of said cannon, and an annular ring inwhich said flanges are rotatably mounted.

4. A cannon, a sleeve mounted thereon, cylindrical flanges upon saidsleeve eccentric to the bore of said cannon, an annular ring in whichsaid flanges' are rotatably mounted,

trunnions integral with said annular ring",I

and a carriage upon which said trunnions are pivotally mounted.

5. A gun-carriage, an annular ring pivotallly supported thereon, and acannon rotatably and eccentrically mounted Within said ring.

G. A cannon, a sleeve mounted thereon, two cylindrical flanges integralwith saidA sleeve eccentric to the bore of said cannon, said flangesprovided with apertures'to receive a front and a rear sight, and anannular ring in which said flanges are rotatably mounted.

7. A cannon, a sleeve mounted'thereon, cylindrical flanges upon saidsleeve eccentric to the bore of said cannon, an annular ring in whichsaid flanges are rotatably mounted,

and roller-bearings interposed between said flanges and ring. I

In testimony whereof I have hereunto set my hand in presence of twosubscribing Witnesses.

-wrLLilM n. vIvIAN. llfilz-nesscs:

EDGAR S. TAFT, JoHN MORGAN.

